I get the same error message when trying to import .sh3p files, error importing or installing plugin:

"Can't import plug-in
"c:\users\poweruser\desktop\home_renovation\sweethome3d\models-various\evidencemarkergenerator-1.1.sh3p"

I am running SweetHome 3D version 7.0.2 on Windows 10 Professional.

I have tried with the following plugin files:
StaircaseGenerator-1.0.sh3p
GenerateRoof.sh3p
ExportPlanImage-1.0.sh3p
and others.

Do the files need to be in a specific directory? I am importing them from my working directory.

.sh3p files are supposed to be native SH3d files aren't they?

I try double-clicking on the .sh3p files and still get the message above.

If I use the menu "Furniture... Import... " and then either select a file or drag-and-drop a file. I get errors with .sh3p, .zip, and .obj files.

I am new to SH3D, so this is frustrating my effort to get my construction renovation project done.